How To Add Freon to a Car Air Conditioner

Auto air vent

It is very easy to add freon to a car air conditioner.  Once your car is no longer blowing any cool air, you may have to add some freon to the air conditioner.  If you do it yourself, you will save a lot of money.  Follow these steps to learn how to do it yourself.

  1. First, you have to find the proper hose to connect the freon can to the air conditioning system.  It is on the low valve.  You open the low valve and then let the freon pass into the air conditioning system.  It will show you on the pressure gauge how much freon that you have put in.  Once it is full you can remove the can and then it should blow cool air.  You can have the air running while you are adding the freon to see if it will blow cold air.  This process should only take a few minutes.  You can add another can if you would like to if you are not getting enough cold air.  There are many videos online that will show you step by step how to add freon to a car air conditioner.
  2. You should pull the valve slowly so you can make sure all of the fluid passes into the air conditioning system.  Make sure the can is empty before you remove it.  Also you can have the ac turned on the entire time on high so you can see if there is cold air coming through the system.  Have the vents open and facing you so you can feel the cold air from the air conditioning system.  Automotive Tool Express carries a quick charge freon gun where you can attach the cable to the low side port and then use the gun to refill.  There is also a gauge that comes with the gun so you can read how much freon has been put in.  You want it to read full.
  3. Make sure you do not put too much freon in the system or else you will have to drain it.  You can also purchase cans of freon online so you can look around for the best deal.  They come with gauges so you can see how much freon to put into your system.  They all attach to the low side port on your air conditioning system.  The end of the hose will fit tightly onto the low side port so you can get a good fit.  The cans have to be punctured with a pin so you can screw the gauge cap onto the can and the pin will puncture the can to release the freon.  The whole process should only take a few minutes to complete and you will be glad that you have done it yourself. 


Share this article!

Follow us!

Find more helpful articles: